ffmpeg编译时保留调试信息

./configure                              \

--enable-debug=3                 \

--disable-optimizations       \

--disable-asm                       \

--disable-stripping               \

... ... (其它设置)

 

configure以后再看看生成的config.mak中-g前面的设置，如果是-O3，可以修改成-O1 或直接去掉（记得以前去掉-O选项编译不通过，不知怎么回事，可能什么地方设置不正确，反正现在是可以了）

 

看看gcc手册中是怎么说的

 

优化选项

-O -O1

Optimize. Optimizing compilation takes somewhat more time, and a lot more memory for a large function.

With -O, the compiler tries to reduce code size and execution time, without performing any optimizations that take a great deal of compilation time.

-O turns on the following optimization flags:  (打开优化开关)